Daily Sunspot Evaluation
Observation Sheet Thursday, 25 July 1968
There is no typed record for this day. The values below were read by computer from the table on the sheet; when in doubt, see the drawing. Details →
- Number of groups (g)
- 9
- Number of spots (f)
- 94
- Relative number (R)
- 184
- Observer
- SM
- Reading
- all checks consistent
- File
- 19680725.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 2 | 16 | 15E | 337 | |||
| 2 | J – 5 | 15 | 75E | 277 | |||
| 3 | E – 48 | -17 | 17W | 9 | |||
| 4 | A – 2 | -26 | 41W | 33 | |||
| 5 | A – 1 | -15 | 28W | 20 | |||
| 6 | J – 1 | -17 | 43W | 35 | |||
| 7 | D – 15 | -18 | 59W | 51 | |||
| 8 | C – 11 | 7 | 19W | 11 | |||
| 9 | B – 9 | 18 | 8W | 0 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.